The follow-up of patients who are discharged from intensive care units follows distinct flows in different parts of the world. Outpatient clinics or post-intensive care clinics represent one of the forms of follow-up, with more than 20 years of experience in some countries. Qualitative studies that followed up patients in these outpatient clinics suggest more encouraging results than quantitative studies, demonstrating improvements in intermediate outcomes, such as patient and family satisfaction. More important results, such as mortality and improvement in the quality of life of patients and their families, have not yet been demonstrated. In addition, which patients should be indicated for these outpatient clinics? How long should they be followed up? Can we expect an improvement of clinical outcomes in these followed-up patients? Are outpatient clinics cost-effective? These are only some of the questions that arise from this form of follow-up of the survivors of intensive care units. This article aims to review all aspects relating to the organization and performance of post-intensive care outpatient clinics and to provide an overview of studies that evaluated clinical outcomes related to this practice.